Considered the 4th greatest natural wonder in the UK, the Giant's Causeway was created as the result of a volcanic eruption 60 million years ago

The Giant’s Causeway is an area that consists of roughly 40,000 basalt columns, many of which act as stepping stones that disappear into the sea, that were the result of a volcanic eruption that occurred about 60 million years ago (Paleogene Period). Located in County Antrim, it was named the fourth greatest natural wonder in the United Kingdom in 2005 and declared a national reserve in 1987. It has also been in the list of UNESCO World Heritage Sites since 1986.

Legend has it that the columns were built by a giant, Fionn mac Cumhaill (Gaelic mythology), who was challenged to fight with another giant and he built a causeway so that they could meet across the North Channel. When Fionn realized that his enemy was much bigger than him, his wife disguised him as a baby and as soon as the other giant (Benandonner) saw the baby’s size, he assumed his father would be gigantic and he fled back home and destroyed the causeway built behind him.

Visitors are allowed to walk over the basalt columns located at the edge of the sea.